Pipe thread protector



Nov. 1, 1932. L. e. PONCE PIPE THREAD PROTECTOR Filed Sept 15, 1950INVENTOR ma BY 9 f ATTORNEY LUGIEN e.

Patented Nov. 1 1932 UNETED STATES PONCE, F PARNASSUS, PENNSYLVANIA,ASSIGNQR T0 ALLE('avIIIilh'l'Y STEEL COMPANY, or BBACKENBIDGE,PEnNsYLvANIa..a'conPonATIonj PIPE THREAD PROTECTOR Application filedSeptember 15,1930.. serial No. 481,900.

This invention relatesto pipe thread protectors of the type employedtoenvelop the threaded ends ofpipe to protect the thread from injury. 1

It is among the objects of the present invention to provide apipe'thread protector of simple construction which shall be adapted tobe interlocked with the thread of the pipe on which it is securedandwhich shall be readily dismembered when the pipe is ready for use.

In pipe thread protectors heretofore constructed, it has been customaryto provide an.

annular metal cap having an inwardly turned peripheral flangeconstituting an abutment for the end of the pipe and having a threadedportion on the interior thereof for engagement with the threaded portionof the pipe, the protector being fastened on the pipe by turning itsscrew thread on the thread of the pipe until its abutting flange isseated against the end of the pipe.

Protectors of this type are expensive to manufacture as they requiremachining operations. to form the thread on the interior of the pipe andin accordance with the pres- 'ent invention the thread is entirelyeliminated, thereby not only reducing the cost of the protector buteliminating labor necessary in fastening it on the end of the pipe.

In the accompanying drawing constituting a part hereof, and in whichlike reference characters designate like parts, Figure 1 is a verticalsectional view of the end of a pipe with a thread protector embodyingthe principles of this invention placed on the end thereof; Figure 2 isa transverse section of a modified form of the protector on the end of apipe; Figures 3 and tare an end and a side elevational view,respectively, of the fastening clip employed to interlock the protectorwith the pipe thread; and Figure 5 is a partial view of the flangedendofthe protector.

With reference to the severalfigures of the drawing, 1 designates a pipehaving a screw thread portion 2 on the end thereof 3 athread protectorcomprising a sleeve which is snugly fitting for the major portion of itslength against the outer wall of the pipe and eX- panded at L to form areenforcing bead adj acentthe end of the pipe, which bead termi- 'nates'in an iii-turned peripheral flange 5 con stituting anabutment for theends of the pipe 1. The semi-spherical end portion 4.- and5 of theprotector constitutes a structural'section which greatly strengthens theprotector and prevents damage to the thread. The in turned end 5' formsa larger opening for the bars employed in handling the pipeand' prevents distortion of the protect-or- V i The lower end of the protectoris curled to r form, a hollow bead or shoulderb, the top end of which isopen at 7 The wall ofthe protector is slo tted by forming an up-struckport on 8. in which a clip 9 is'inserted This clip which is shown inFigures 3 and 4 of the drawing is preferably formed ofmetal that issofter than the thread of the pipe, suitable material being aluminum,"and 'is' constructed in triangular form as shown. The clip is normallyin assembled position when theprotector is slipped onthe end ofthe'pip'e and by tapping the clip with a mallet, its end is forced intoengagement with'the thread 2 of the pipe.

When it is desired to remove the protector, a rod or a hook is insertedin the opening 10 between the wall of the protector and the clip and thelatter is pulled out of position, thereby releasing the protector, whichmay be removed by simply slipping it from the end of the pipe. y

In Figure 2 of the drawing the protector is shown with two clips insteadof one, as in Figure 1, this being desirable on large diameter pipes.Any number such as three or more clips may be employed to obtain greaterarea of Contact with the thread of the pipe if desired. V i

In Figure 5 of the drawing the end of the protector is shown withopenings 11 which constitute drain holes for use on larger pipes toprevent rusting due to accumulation of water in the protector.

threaded pipe to protect the threads against injury.

Although one embodiment of the invention has been herein illustrated anddescribed, it Will be obvious to those skilled in the art that variousmodifications may be made in the details of construction WlthOlltdeparting from the principles herein set forth.

I claim:

1. A pipe thread protector comprising a sleeve having a peripheralflange for engagement With the end of the pipe and terminating in ahollow bead at its other end, said sleeve being provided with antip-struck portion forming a slot, and a clip inserted in said slot,said clip having one end abutting against the hollowbead' of the sleeveand its other end in interlocking engagement With the thread of thepipe.

. 2. A pipethread protector comprising in combination a sleeve adaptedto engage the end of a pipe having a slotted portion therein and a clipdisposed in said slotted portion and adapted to engage the thread of thepipe, said clip having one end in abutment With a shoulder'formed by aprojection of the sleeve.

3. A pipe thread protector comprising a sleeve adapted to envelop thethreaded end of a pipe, and having a plurality of slots therein andhaving an end portion extending radially outward, clips disposed in theslots of said sleeve and abutting against said extended end, said clipsbeingadapted to interlock With the threads of the pipe.

In testimony whereof I have hereunto set my hand.

' LUGIEN Gr. PONCE.

